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04bcc11905
derived classes. Since global data alignment, layout, and mangling is often based on the DataLayout, move it to the TargetMachine. This ensures that global data is going to be layed out and mangled consistently if the subtarget changes on a per function basis. Prior to this all targets(*) have had subtarget dependent code moved out and onto the TargetMachine. *One target hasn't been migrated as part of this change: R600. The R600 port has, as a subtarget feature, the size of pointers and this affects global data layout. I've currently hacked in a FIXME to enable progress, but the port needs to be updated to either pass the 64-bitness to the TargetMachine, or fix the DataLayout to avoid subtarget dependent features. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227113 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
//===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the X86 specific subclass of TargetMachine.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
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#define LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
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#include "X86InstrInfo.h"
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#include "X86Subtarget.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class StringRef;
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class X86TargetMachine final : public LLVMTargetMachine {
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std::unique_ptr<TargetLoweringObjectFile> TLOF;
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// Calculates type size & alignment
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const DataLayout DL;
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X86Subtarget Subtarget;
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mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap;
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public:
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X86TargetMachine(const Target &T, StringRef TT, StringRef CPU, StringRef FS,
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const TargetOptions &Options, Reloc::Model RM,
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CodeModel::Model CM, CodeGenOpt::Level OL);
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~X86TargetMachine() override;
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const DataLayout *getDataLayout() const override { return &DL; }
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const X86Subtarget *getSubtargetImpl() const override { return &Subtarget; }
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const X86Subtarget *getSubtargetImpl(const Function &F) const override;
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/// \brief Register X86 analysis passes with a pass manager.
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void addAnalysisPasses(PassManagerBase &PM) override;
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// Set up the pass pipeline.
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TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
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TargetLoweringObjectFile *getObjFileLowering() const override {
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return TLOF.get();
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}
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};
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} // End llvm namespace
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#endif
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